Apparatus for detecting a projection angle in a projection syste

Details Apparatus for detecting a projection angle in a projection syste Apparatus for detecting a projection angle in a projection syste

1996-11-27

1998-02-24

Dowling, William

Optics: image projectors

Distortion compensation

353 70, G03B 2114

Patent

active

057205396

ABSTRACT:
An apparatus for detecting a projection angle of a projection system for displaying a picture, which automatically detects a projection angle of a projection lens with respect to a screen and provides computed compensation amounts to an apparatus for pre-compensating an asymmetrical picture, is disclosed. Even when the projection lens installed in the projection system for displaying a picture is disposed at an upward or a downward projection angle, the projection angle is automatically detected and the detected projection angle is provided as the compensation amount to the apparatus for pre-compensating an asymmetrical picture. Consequently, the user does not have to engage in a cumbersome process of setting up the compensation amount through trial and error.

REFERENCES:
patent: 4422153 (1983-12-01), Arai et al.
patent: 4695693 (1987-09-01), Staats et al.
patent: 5468940 (1995-11-01), Kang
patent: 5537168 (1996-07-01), Kitagishi et al.
patent: 5548357 (1996-08-01), Appel et al.
patent: 5557353 (1996-09-01), Stahl
patent: 5584552 (1996-12-01), Nam-Su et al.

Affiliated with

Also associated with

Rating

Apparatus for detecting a projection angle in a projection syste does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for detecting a projection angle in a projection syste, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for detecting a projection angle in a projection syste will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1870935